摘要：线性电路测量温度，并控制产生可变电源电压为风扇冷却风扇的速度。Maxim > App Notes > AUTOMOTIVE TEMPERATURE SENSORS and THERMAL MANAGEMENT
Keywords: analog, fan speed control, temperature sensor, fan controller, thermal management Jun 26, 2002
APPLICATION NOTE 1125
Circuit Generates Analog Fan-Speed Control
Abstract: A linear circuit measures temperature and controls the speed of a cooling fan by generating a variable
supply voltage for the fan.
Fan noise is becoming a larger issue as more electronic equipment enters the office and the home. A variable
speed fan permits slower, and quieter, fan speed when temperature conditions allow.
Fan-control circuits range from simple switches that boost the fan speed at a certain temperature, to digitally
controlled fans with continuously-variable speed. High-speed/low-speed switches are inexpen……
